\section{Annex}\label{Annex}
\begin{figure*}[htb]
 \centering
 \includegraphics[width=0.8\textwidth]{pics/img003}
 \caption{Inorder iterative algorithm}
 \label{fig:05:001:Inorder_iterative}
\end{figure*}

\begin{figure*}[htb]
 \centering
 \includegraphics[width=0.5\textwidth]{pics/img004}
 \caption{Node expanding algorithm (for recursive usage)}
 \label{fig:05:004:Node Expanding}
\end{figure*}

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